/*
 *  Copyright 2011 - Giovanni Tosto
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 */
package org.softwareforge.struts2.breadcrumb.tag;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.jsp.JspException;

import org.apache.struts2.components.Component;
import org.apache.struts2.components.IteratorComponent;
import org.apache.struts2.views.jsp.ComponentTagSupport;
import org.softwareforge.struts2.breadcrumb.BreadCrumbInterceptor;

import com.opensymphony.xwork2.util.ValueStack;

/**
 * @author Giovanni Tosto
 * @version $Id: BreadCrumbTag.java 293 2011-06-14 22:10:50Z giovanni.tosto $
 */
public class BreadCrumbTag extends ComponentTagSupport {

    private static final long serialVersionUID = 1L;

    // var attribute
    private String var;

    public void setVar(String var) {
	this.var = var;
    }

    public void setId(String id) {
	setVar(id);
    }

    // Status attribute
    private String status;

    public String getStatus() {
	return status;
    }

    public void setStatus(String status) {
	this.status = status;
    }

    @Override
    public Component getBean(ValueStack stack, HttpServletRequest req,
	    HttpServletResponse res) {
	IteratorComponent ic = new IteratorComponent(stack);
	return ic;
    }

    @Override
    protected void populateParams() {
	super.populateParams();

	IteratorComponent c = (IteratorComponent) getComponent();
	c.setId(var);
	c.setValue("#session['" + BreadCrumbInterceptor.CRUMB_KEY + "'].crumbs");
	c.setStatus(status);
    }

    public int doEndTag() throws JspException {
	component = null;
	return EVAL_PAGE;
    }

    public int doAfterBody() throws JspException {
	boolean again = component.end(pageContext.getOut(), getBody());

	if (again) {
	    return EVAL_BODY_AGAIN;
	} else {
	    if (bodyContent != null) {
		try {
		    bodyContent.writeOut(bodyContent.getEnclosingWriter());
		} catch (Exception e) {
		    throw new JspException(e.getMessage());
		}
	    }
	    return SKIP_BODY;
	}
    }

}
